re·con·nect
/ˌrēkəˈnekt/
verb
- connect back together.”surgeons had to reconnect tendons, nerves, and veins”
- re-establish a bond of communication or emotion.”in order to keep your marriage healthy, it is important to reconnect as mature individuals”

Since neither person Logan is referring to have ever been married (to each other), it seems the most likely definition of them reconnecting would be to “re-establish a bond of communication or emotion”.
In short, he couldn’t possibly know that. A picture of the two of them (that was posted to social media) together (the two people Logan is referring to) does not prove anything, but that a picture was taken of them together.
This is aside from the fact, there’s no solid proof (including witness testimony) to support either of them being abusers.
Who died and made Logan judge and jury? If someone did, I guess that’s a second-hand account as well and we should just play along. But you’re not a sheep, are you dear reader? Let’s hope not, for the sake of yourself and actual victims. They will be the ones lost in the mix by people who bear false witness and people who contribute to spreading the bearing of false witness? They are the mob. Don’t be a sheep. Bear your fangs with dignity, dear protectors. All. Day. Every. Day.